Abmatuee and mounting fob vibbatoby tjntts and the like



Jan. 17, 1928. 1,656,484

w. HEUSSER ARMATURE AND MOUNTING FOR VIBRATORY UNITS AND THE LIKE FiledMay 24, 1926 Patented Jan. 17, 1928.

UNITED STATES PATENT-OFFICE.

WILFRID HEUSSER,.OF SALT LAKE CITY, UTAH.

ARMATURE AND MOUNTING FOR VIBRATORY UNITS AND THE LIKE.

Application filed May 24,

Sedond. A mounting which, notwithstand ing'itsj delicacy, shall causethe'armatureto' be held'so'securely and positively,that t he tiveproperties. I v

Thi cl. 'An armature which shallibejheld to its bearings by a constantpredetermined spring pressure so that there shall be not theslightest'lost motion therein. V

Fourth. A structure which shall be comparatively economical tomanufactu'r'ewhen considering its refinement of design] In"attaining theobjects just outlined, I provide a spool structure preferably inaccordance with that described in my applica tionfor UJS. patent for animproved vibratory unit whose filing date is even herewith.

Within the sleeve ofthe spool, I provide an armature whichextendsfromend to end thereof in the usual manner. Intermediate or interjacent theends of the armature andprojecting from the sides thereof, aretwooppositely disposed projections or lugs whose edges, transverse tothe length of the armature, areformed to a sharp knife edge of generalV-form which are arranged to take their hearing in notched members fixedin the spool sleeve. Between the bearing lugs of the armature is anopening with a knife edge facing in the direction opposed to "the knifeedges of the bearing lugs.

A tie member, which may consist of a bent wire-having two branches witha short bend between them, is passed through the said opening so thatthe bend thereof shall enmostsevere usage shall not impa ir its opera-Qgage the knife edgeof the opening, while the 7 branches extend to theoutside :of the spool where they may be engaged by a tensioned springmember which serves'to pull the armature with its knife edge lugssecurely against the bearings thereof; The intermediate knifeedge'bearing liess'ubstantially on a straight line joining the knifeedge bearings of the side lugs, so that a perfect pivot actionis securedfor the armature,

form of this invention:

- plane;

1926. Serial No. 111,455.

with only an infinitesimal degree of friction. 'l he armature, thusmounted, is highly sensitive and ofunlimited durability.

The'features of this invention for which "the protection of LettersPatent is desired, are collectively grouped in the claims whichconclude; this specification.

In the drawing which -shows a desirable Fig. 1 represents a plan, thespool being in horizontal section'on line 1-'-1 in Fig. 2;

Fig.2, an elevation in the direction of the arrow 2,i Fig. '1, reflectedfrom a' mirror Fig. 3, a'jsection'on' lined-.3, Fig.1; Fig. 4, anenlarged fragmentary's'ection taken as indicalted'on line 1-4 in Fig. 1.

Referring to the drawing",

the sleeve of the spool, 12v the flanges there- 10 indicates of, 14 themagnetic conductors and 15 the pole pieces.

The armature 16 is oscillatingly mounted within the 'sleeve and extendsfrom end to end thereof in the direction perpendicular to the aXis ofoscillation.

Pins 17 pass through the sleeve and pole pieces preferably at, or near,the sides thereof, and are secured inj'place by light riveting'asshown-21 518 in Fig. 4. V-shaped notches having the intersectinginclined faces 19, at theiryertices from the bearings for the armature.16. The armature may have its front portion somewhat wider than itsrear portion, thus forming an offset or lug on either side, each offsethaving the inclined faces 21-which intersect and form substantially asharp knife-edge.

The angle between-faces 21 isless than the angle between faces 19, sothat there shall always be sufficient clearance to allow unobstructedmovement for the armature.

The two knife edges of the armature should coincide with the straightline joining them to each other. This line constitutes the axis ofoscillation of the armature.

Between thetwo said edges and on the same straight line, lies a thirdknife edge. '24, in th1s instance a point in the circum fcrentialintersection of the beveled surfaces.

An equalizing yoke 27 having the curved arms 27l united by the bend Q7-2engages the tie 26in a manner dearly shown in Fig. 3 where the arms37-4. extend through the eyelets 2G 3.

A sprin bar 28 preferably made of phosphor maize wire engages the yoke27 in its bend 2T-'-2, and is tensioned byhavingits: two ends sprungback to rest in the out: hoard cradles M) which latter aresupported bythe integral legs 30 1 having the feet I;(l-2L 'Thcse feet aretightly'litted into one 'conductonl-t and one flange .12 of the spool,and th'nssccurely holdftlie tensioning assemblage for the ari'i'ia'tu'reand therefore the ai-n'la'ture itselfas ell. I

Tt-Trill be noticed that-"after the assemblage is made, there ivill benothing to deteriorate or get out of order, except ng through breakage.

To he s ecilic: (a) 'lhe friction In the armature earings is sonfinitesimal that there may be said to be no wear at-allj (b). Nomovement is i-equ'ir'ed of the members of the spring-rigging, so thatall flexing is static, and'therefo re no. part of the strtica ture issubject toc'rystallization. (0) Lost; motion in' the bearings of thearmature oani never o'c'cur.

Hence, an instrument constructed in accordance with this inventionshould'have unlimited durability, subject only to' considerations ofabuse or deteriorating infin- V ences from the; outside.

For com-enie'nce'in' designation, the knifeiike edges defined bybeveled'faees 21, may

be called primary and the knite-likeedge' 24 be called secondary.

\Vhile a typical -embodiment of this invention is herein shoivn 'anddescribed, it

should"'b'e clearly understood that all the detailed'part-s thereof, mayor may not,"appear in the preferred forms, and also, that,

the preferred forms maybe varied from time to time, depending upon thecircumstances and conditions governing and governed by, the developmentof this invention and the art-s to which it is incident, therefore thescope of this invention may be ascertained from the claims in which itsspirit/is generalized.

Having fully described my invention, what I claim is:

1. A'n armature having knife edge portions spaced apart from each othersubstan-' tially along an axis of oscillation, said axis of oscillationlocated intcrjacent the oscillating extremitiesof thesaid armature, anda mounting having bearings'arrangd to'operatively receiie said knifee'dge port-ions. 2L armature having knife edge por tions spaced apartfrom each other substantially along an axis of oscillation, said axis ofoscillation located interjacent' the oscillating extremities of thesaidarmature, a mounting having bearingsarranged to re t he: pat

ceive said knife edge portions and a rigging arranged to hold saidarmature against, its bearing under a spring tension.

3. An oscillating armature, bearings for the armature, and aspnng-riggmgoperative to thrust sa d armature against its bearings, said spring riging comprising a tie engaglng the armature, said tie having outwardly'extending br'aiiclies, a yoke having arms engaging 's'aid taci l ni' eand mo ting. i iifih i r.

" 'tory units "th'e'lllikitilf cdiiiprisiiig a 'spool having a sleeve,baiings' 'spaced apart f roin 1110 each other in;. sa' idi s1eve',} anosc'ill a ting ai ..h n;i i'm iry: e ges Pp9$ t.. Sides t re f a a ged.t -.e e .s idlb' ar-u ings,' a secondary edge intern; diat the saidprimary edges substat r'tially n the. aiiis of oscillation, a "springfrigging engaging said secondary edge operative topres s said priy .e s.f ii t t i b ar ng a d sup.- p me r f a d p g ri gingd e posed'u p on"said spool. I

8. A spool, an o'scillati ng armature liava mbers been epp esi s. eit

t l eib ;.i r. s d j em er within said spoolyf and'mea'ns for pressingsaid .edgemembersagainst said bearings.

9; Anfarmatureflhaying knife edge portions' spacedfapart from each otherand; lo-

. cated upon opposite sides'of the armature, a

spool with bearings arranged to receive said knife edge portions and a'spring ngging mounted on said spool arranged to hold said armatureagainst its bearings.

10. An armature having edges, 21 structure having bearings engaging saidedges, a tensioned spring bar, outboard bearings supporting said springbar, and connecting members extending from said tensioned bar to saidarmature.

lL-An oscillating armature, a tie having a crotch engaging saidarmature, branches extending from said crotch, a yoke engaging saidbranches. a tensioned bar engaging said yoke, and outboard bearingssupporting said tensioned bar.

12. An armature, hearings on opposite sides of said armature,interjacent its ends, a tie engaging said armature between saidbearings, a yoke engaging said tie, a tensioned spring bar engaging saidyoke, and outboard bearings supporting said spring bar.

13. A spool having a sleeve, and flanges carried by said sleeve, anoscillating armature mounted within said sleeve, at ie having a crotchengaging said armature, branches extending from said crotch, a yokeengagin said branches, a tensioned bar engaging said yoke, and bearingsspaced apart from the outer face or one of said flanges, said bearingssupporting said tensioned bar.

.14. A spool having a sleeve, and flanges carried by said sleeve, anoscillating armature mounted within said sleeve, bearings on oppositesides of said armature, interjacent its ends, a tie engagin saidarmature between said bearings, a yo e engaging said tie, a tensionedspring bar engaging said yoke,

and bearings spaced apart from the outer face of one of said flanges,said bearings supporting said tensioned 'bar.

In testimony whereof I sign my name hereto.

WILFRID HEUSSER.

